TJS

I read your other thread. I dont know why no one has mentioned forgetting the phone line and just going 802.11 wireless ethernet for such a distance. You go down to BestBuy and pick them up. You would probably want to use directional antennas since youre getting out too there (~200 feet or so). Or you can buy MDS or any brand network radios (unlicensed 900 mhz radios etc) to wirelessly extend your ethernet point to point many thousands of feet to miles.

I would look at this forum as a generalized information area. I think users would go in there to help in forming more to the point questions to be placed in other distinct forums. I hear the term SCADA being used by various professionals refering to usually the HMI station ( the iFix or WW station itself). As if the HMI actually was THE system. Maybe if the particular system was truly a gather only system, then maybe the HMI would be the whole show along with the input devices. But all systems I've ever worked on had PLC or DCS processeors that do the real work and the HMI was a neccessary evil to give the operator something to look at and click on. Today with ethernet connected everything, along with older data highways and modbuses etc etc, its quite confusing how all the parts manage to get the data thru. What is a SCADA? What is a Control System? are they the same thing. What is a data logger? What is a PLC? DCS? Are they the same? Is a SCADA the same? What is a driver or OPC Server. and on and on. This is why there are professionals. But new persons to the SCADA or Control system world (and I'm sure many are reading this site) could go into this forum to read generalized question threads and educate themselves, hopefully to formulate better questions elsewhere. My 2 cents